CN103674932A - Method for determining content of Cu, Mn and Sn in Cu-Mn-Sn alloyed powder through ICP (inductively coupled plasma) - Google Patents
Method for determining content of Cu, Mn and Sn in Cu-Mn-Sn alloyed powder through ICP (inductively coupled plasma) Download PDFInfo
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- 229910052718 tin Inorganic materials 0.000 title claims abstract description 74
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 57
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 238000009616 inductively coupled plasma Methods 0.000 title claims abstract description 26
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910018645 Mn—Sn Inorganic materials 0.000 title abstract 4
- 239000012086 standard solution Substances 0.000 claims abstract description 29
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 16
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000011135 tin Substances 0.000 claims description 73
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 69
- 239000010949 copper Substances 0.000 claims description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 53
- 239000000523 sample Substances 0.000 claims description 36
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 28
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 26
- 239000011572 manganese Substances 0.000 claims description 25
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 24
- 238000010790 dilution Methods 0.000 claims description 14
- 239000012895 dilution Substances 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000012488 sample solution Substances 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 abstract description 5
- 238000007865 diluting Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 8
- 230000009021 linear effect Effects 0.000 description 7
- NWLCFADDJOPOQC-UHFFFAOYSA-N [Mn].[Cu].[Sn] Chemical compound [Mn].[Cu].[Sn] NWLCFADDJOPOQC-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000004304 visual acuity Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention provides a method for determining the content of Cu, Mn and Sn in Cu-Mn-Sn alloyed powder through ICP (inductively coupled plasma). The method comprises the steps as follows: preparing Cu/Mn/Sn mixed standard solutions with five kinds of different concentration; respectively determining the spectral line intensity of Cu, Mn and Sn in the five kinds of standard solution through an ICP optical emission spectrometer, and then drawing three standard work curves of the Cu, the Mn and the Sn with the concentration of the three elements serving as abscissas and the corresponding spectral line intensity serving as ordinate; taking a Cu-Mn-Sn alloyed powder sample, adding excessive concentrated hydrochloric acid, heating the mixture at the temperature of 80-120 DEG C, and then adding excessive dilute nitric acid to obtain a liquid to be determined; diluting the liquid to be determined to enable the theoretical content of Sn elements is 25 ug/mL; and respectively the spectral line intensity of the Cu, the Mn and the Sn, and searching the standard curves to obtain the content according to the spectral line intensity. The content of the elements Cu, Mn and Sn in the Cu-Mn-Sn alloyed powder can be determined rapidly and accurately with the method, and the repeatability is good.
Description
Technical field
The present invention relates to alloyed powder detection technique field, be specifically related to a kind of method of measuring copper manganese tin element content in copper manganese ashbury metal powder with ICP.
Background technology
Signal bronze, is commonly called as bronze, is that the mankind use historical metal material at most.Tin add the intensity that has improved significantly copper, and its plasticity is improved, corrosion resistivity strengthens, other every mechanical propertys, physical property are all abnormal good, so copper manganese ashbury metal is usually used in manufacturing the wear-resisting spare parts such as gear and anti-corrosion accessory.
Along with scientific and technological development, more and more higher to the quality requirements of product, more and more higher to the requirement of material.For alloy, the control aborning of the content of each element just becomes particularly important.In order to improve the combination property of product, copper manganese ashbury metal powder generally need to carry out a self check to its each constituent content after preparation is complete, before being processed into part again.
The general involutory bronze of inductively-coupled plasma spectrometer (ICP) that adopts carries out detection of content of element at present.But in practical operation, we find that the test result of tin content in copper manganese ashbury metal powder exists the problems such as deviation is very large, poor repeatability, this has brought great difficulty to each constituent content in Accurate Determining copper manganese ashbury metal powder.
Summary of the invention
Technical matters to be solved by this invention is for above the deficiencies in the prior art, a kind of method of measuring copper, manganese, tin element content in copper manganese ashbury metal powder with ICP is provided, the method can be measured the content of copper manganese tin element in copper manganese ashbury metal powder quickly and accurately, reproducible.
The technical solution adopted in the present invention is:
A method of measuring copper, manganese, tin element content in copper manganese ashbury metal powder with ICP, comprises following operation steps:
(1) production standard solution: the Cu/Mn/Sn mixed standard solution of five kinds of concentration of preparation, wherein:
Standard solution is middle copper content 90.5 μ g/mL, manganese content 10 μ g/mL, tin content 5 μ g/mL 1.,
Standard solution is middle copper content 452.5 μ g/mL, manganese content 35 μ g/mL, tin content 12.5 μ g/mL 2.,
Standard solution is middle copper content 905 μ g/mL, manganese content 70 μ g/mL, tin content 25 μ g/mL 3.,
Standard solution is middle copper content 553 μ g/mL, manganese content 105 μ g/mL, tin content 37.5 μ g/mL 4.,
Standard solution is middle copper content 1810 μ g/mL, manganese content 140 μ g/mL, tin content 50 μ g/mL 5.;
(2) line strength of copper, manganese, tin in five kinds of standard solution that make with inductively-coupled plasma spectrometer difference determination step (1), then the concentration of copper, manganese, three kinds of elements of tin of take is respectively horizontal ordinate, corresponding line strength is ordinate, draws copper, manganese, three standard working curves of tin;
(3) the copper manganese ashbury metal powder sample of getting prediction is in container, add excessive concentrated hydrochloric acid, container is positioned on 80～120 ℃ of heating plates and is heated, manganese in sample, tin are dissolved completely, it is cooling after sample no longer dissolves, then add the remaining copper of excessive nitric acid dissolve to sample to dissolve completely, cooling; Here the excessive concept in excessive concept and chemical reaction is same, with the amount adding, makes to dissolve to be as the criterion completely;
(4) during with copper manganese ashbury metal powder sample making, the consumption of tin element carries out the calculating of tin content theoretical value, and step (3) gained liquid is diluted with deionized water, and making the theoretical content of tin element in the liquid after dilution is 25 μ g/mL;
(5) liquid after the dilution of step (4) gained is placed under inductively-coupled plasma spectrometer, measure respectively line strength of copper, manganese, three kinds of elements of tin, according to the line strength recording, from three standard working curves of step (2) gained, check in respectively the content of copper, manganese, tin element, then calculate the ratio of copper, manganese, tin in copper manganese ashbury metal powder sample, result is calculated A=(B-C) * V/M, in formula:
The content of respective element in A-sample, the ppm of unit,
The concentration of respective element in B-sample, the μ g/mL of unit,
The background concentration of matrix to respective element in C-sample, the μ g/mL of unit,
V-sample solution cumulative volume, Unit/mL,
M-sample mass, the g of unit.
In described step (3), concentrated hydrochloric acid is formed according to volume ratio 1 ﹕ 3 dilutions by pure hydrochloric acid (massfraction 36-38%) and deionized water.
In described step (3), nitric acid is formed according to volume ratio 1 ﹕ 3 dilutions by pure nitric acid (massfraction 65-68%) and deionized water.
The inductively-coupled plasma spectrometer that the present invention uses is HK-2000 high resolving power inductively-coupled plasma spectrometer.
Compared with prior art, the present invention has following remarkable advantage and beneficial effect:
(1) through a large amount of research and test, when we find to utilize inductively-coupled plasma spectrometer to carry out the assay of tin element, between its corresponding line strength of concentration of copper and manganese element, there is good linear relation, and the reason of the test result of tin content exists problems such as deviation is very large, poor repeatability is because the linear relationship between its corresponding line strength of concentration of tin element is not fine, so cause the content of tin element in alloy to measure out accurately.But through lot of experiments, we find, in this concentration range of 5-50 μ g/mL, between its corresponding line strength of concentration of tin element, to have linear relationship.According to this result of study we determined the present invention can Accurate Determining copper manganese ashbury metal powder in the method for copper manganese tin element content, according to the theoretical value of tin element, by solution dilution to be measured to tin element theoretical content, be first 25 μ g/mL, even if deviation so how, in solution to be measured, the content of tin element is at 5-50 μ g/mL within the scope of this certainly, between line strength of measuring like this and concentration, there is linear relationship, then according to standard working curve, just can be checked in by line strength of tin element its actual content.So invention can be measured the content of copper manganese tin element in copper manganese ashbury metal powder exactly, reproducible.
(2) the present invention first uses concentrated hydrochloric acid that manganese, tin element in copper manganese ashbury metal powder are dissolved completely, and then use nitric acid that copper is dissolved completely, this has realized well three kinds of elements in copper manganese ashbury metal powder has been dissolved completely, can not meet again cold analysis and go out etc. to affect the situation of subsequent detection, guarantee carrying out smoothly of detection, ensured the use safety of equipment;
(3) the present invention utilizes HK-2000 high resolving power inductively-coupled plasma spectrometer, quick, simple and direct, accurately to detect each component in copper manganese ashbury metal powder content.Utilize Matrix Match, offset matrix and disturb.The method is simple to operate, can guarantee accuracy and precision that sample size detects simultaneously.And this instrument is competitively priced, has wide range of applications, use this instrument can reduce detection input cost.
(4) content of each component in energy fast detecting copper manganese ashbury metal of the present invention, the present invention adopts multiple spot scaling method, can fast, accurately detect copper in copper manganese ashbury metal powder, manganese, the content of tin.
(5) reduced as much as possible the possibility of introducing influence factor, pollution-free, convenient, simple, cost is low, workable.
Accompanying drawing explanation
Shown in Fig. 1 is the standard working curve of copper of the present invention;
Shown in Fig. 2 is the standard working curve of manganese element of the present invention;
Shown in Fig. 3 is the standard working curve of tin element of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is further described in detail, but is not limited to this.
1, method summary
Solution to be measured is introduced to inductively-coupled plasma spectrometer, measure element spectral line intensity to be measured.The line strength recording according to concentration known standard solution, obtains the concentration of solution corresponding element to be measured.
2, reagent
2.1 hydrochloric acid, nitric acid (1 ﹕ 3): top grade pure hydrochloric acid (massfraction 36-38%) and deionized water are according to volume ratio 1 ﹕ 3 dilutions;
2.2 hydrochloric acid, nitric acid (1 ﹕ 3): the pure nitric acid of top grade (massfraction 65-68%) and deionized water are according to volume ratio 1 ﹕ 3 dilutions;
2.3 manganese mark liquid (1000 μ g/mL): produce, prepare by Beijing Nanogram Corp.;
2.4 tin mark liquid (500 μ g/mL): produce, prepare by Beijing Nanogram Corp.;
2.5 fine copper (99.99%): produce, prepare by Beijing Nanogram Corp.;
3, key instrument
HK-2000 type high resolving power, high sensitivity inductively-coupled plasma spectrometer that 3.1 Beijing China Tech Yi Tong Science and Technology Ltd.s produce, and emission spectrographic analysis software (version: 2.0.0.0), instrument main parameters:
Emissive power: 1KW,
Frequency of operation: 40MHz,
Plasma gas flow rate: 18L/min,
Auxiliary gas: 0.4L/min,
Carrier gas: 0.2L/min,
Carry Compressive Strength: 1.2MPa;
The Db-1 type electric hot plate that on 3.2, Haikang road instrument and equipment company limited produces;
4,, for fear of the phase mutual interference between element, the analysis of line wavelength that element to be measured is selected is:
| Element | Copper | Manganese | Tin |
| Wavelength (nm) | 327.754 | 293.306 | 189.989 |
5, minimum short-term precision
Absolute or the relative emitted luminescence intensity 10 times of measuring the transmitting of each element Cmax calibration curve solution, calculates its standard deviation, and relative standard deviation should be less than 0.9%.
6, the linearity of curve
The linearity of calibration curve checks by calculating related coefficient, and related coefficient must be greater than 0.999.
7, analytical procedure
(1) utilize PVD method to make copper manganese ashbury metal powder, copper content is 90.5%, and manganese content is 7%, and tin content is 2.5%.
(2) production standard solution:
In Beijing nanogram fine copper processed (99.99%) 0.905g to 100mL beaker, add nitric acid (1 ﹕ 3) 40～60mL, be then positioned over heating at 80～120 ℃ on heating plate, it is dissolved completely, cooling rear constant volume 100mL, obtains copper mark liquid (9050 μ g/mL), stand-by; Manganese mark liquid (1000 μ g/mL): produce, prepare by Beijing Nanogram Corp.; Tin mark liquid (500 μ g/mL): produce, prepare by Beijing Nanogram Corp..
By table 1, add the volume of each element at 100mL volumetric flask, then be settled to scale mark with deionized water dilution, shake all.
Table 1. concentration of standard solution
Obtain the Cu/Mn/Sn mixed standard solution of five kinds of concentration, wherein:
Standard solution is middle copper content 90.5 μ g/mL, manganese content 10 μ g/mL, tin content 5 μ g/mL 1.,
Standard solution is middle copper content 452.5 μ g/mL, manganese content 35 μ g/mL, tin content 12.5 μ g/mL 2.,
Standard solution is middle copper content 905 μ g/mL, manganese content 70 μ g/mL, tin content 25 μ g/mL 3.,
Standard solution is middle copper content 553 μ g/mL, manganese content 105 μ g/mL, tin content 37.5 μ g/mL 4.,
Standard solution is middle copper content 1810 μ g/mL, manganese content 140 μ g/mL, tin content 50 μ g/mL 5..
(3) drawing standard working curve:
Line strength with copper, manganese, tin in inductively-coupled plasma spectrometer five kinds of standard solution that determination step (2) makes respectively, then the concentration of copper, manganese, three kinds of elements of tin of take is respectively horizontal ordinate, corresponding line strength is ordinate, draw copper, manganese, three standard working curves of tin, respectively as shown in Figure 1, Figure 2, Figure 3 shows.
(4) according to every 0.05g sample, add hydrochloric acid (1 ﹕ 3) 5-10mL, heating at 80～120 ℃ on placement and heating plate, standard specimen is dissolved completely cooling a little after sample no longer dissolves, add nitric acid (1 ﹕ 3) dissolved copper element until sample dissolves completely, be cooled to uniform temperature, be diluted to 50mL, be configured to the solution of 1000 μ g/mL;
(5) during with copper manganese ashbury metal powder sample making, the consumption (2.5%) of tin element carries out the calculating of tin content theoretical value, and step (4) gained liquid is diluted with deionized water, and making the theoretical content of tin element in the liquid after dilution is 25 μ g/mL;
(6) liquid after the dilution of step (5) gained is placed under inductively-coupled plasma spectrometer, measure respectively line strength of copper, manganese, three kinds of elements of tin, according to the line strength recording, from three standard working curves of step (3) gained, check in respectively the content of copper, manganese, tin element, then calculate the ratio of copper, manganese, tin in copper manganese ashbury metal powder sample, result is calculated A=(B-C) * V/M, in formula:
The content of respective element in D-sample, the ppm of unit,
The concentration of respective element in E-sample, the μ g/mL of unit,
The background concentration of matrix to respective element in F-sample, the μ g/mL of unit,
V-sample solution cumulative volume, Unit/mL,
M-sample mass, the g of unit.
8, sample analysis
Using sequence number is that 1,2,3,4,5,6 volumetric flasks carry out working curve correction, and (copper content is 90.5% to use respectively compound sample; Manganese content is 7%; Tin content is 2.5%) and the finished product of testing sample carry out recovery experiment, sample respectively 0.05g and dissolve, add standard solution (in table 1 in No. 4 volumetric flasks solution) 5mL, constant volume 50mL, with the content of each element in verification method accuracy and product.
Table .2 working curve data result gathers
From working curve, tin element working curve linear relationship when low concentration is bad, may be because the detectability that instrument restriction causes is higher, remove a low concentration point, other four point Linears are (R=0.997) better, copper, the working curve linear coefficient of manganese two elements is respectively 0.998 and 0.996.Biased sample recovery of standard addition 99.8%, experiment makes sample recovery rate 98%.Result shows that the method really can accurate analysis goes out the content of Yang product Zhong Tong ﹑ Meng ﹑ tin, and the method is simple to operate, quick in addition, cost is low, and feasibility is higher.
The above embodiment of the present invention is to explanation of the present invention and can not be for limiting the present invention, and the implication suitable with claims of the present invention and any change in scope, all should think to be included in the scope of claims.
Claims (3)
1. with ICP, measure a method for copper, manganese, tin element content in copper manganese ashbury metal powder, it is characterized in that comprising following operation steps:
(1) production standard solution: the Cu/Mn/Sn mixed standard solution of five kinds of concentration of preparation, wherein:
Standard solution is middle copper content 90.5 μ g/mL, manganese content 10 μ g/mL, tin content 5 μ g/mL 1.,
Standard solution is middle copper content 452.5 μ g/mL, manganese content 35 μ g/mL, tin content 12.5 μ g/mL 2.,
Standard solution is middle copper content 905 μ g/mL, manganese content 70 μ g/mL, tin content 25 μ g/mL 3.,
Standard solution is middle copper content 553 μ g/mL, manganese content 105 μ g/mL, tin content 37.5 μ g/mL 4.,
Standard solution is middle copper content 1810 μ g/mL, manganese content 140 μ g/mL, tin content 50 μ g/mL 5.;
(2) line strength of copper, manganese, tin in five kinds of standard solution that make with inductively-coupled plasma spectrometer difference determination step (1), then the concentration of copper, manganese, three kinds of elements of tin of take is respectively horizontal ordinate, corresponding line strength is ordinate, draws copper, manganese, three standard working curves of tin;
(3) the copper manganese ashbury metal powder sample of getting prediction is in container, add excessive concentrated hydrochloric acid, container is positioned on 80～120 ℃ of heating plates and is heated, manganese in sample, tin are dissolved completely, it is cooling after sample no longer dissolves, then add the remaining copper of excessive nitric acid dissolve to sample to dissolve completely, cooling;
(4) during with copper manganese ashbury metal powder sample making, the consumption of tin element carries out the calculating of tin content theoretical value, and step (3) gained liquid is diluted with deionized water, and making the theoretical content of tin element in the liquid after dilution is 25 μ g/mL;
(5) liquid after the dilution of step (4) gained is placed under inductively-coupled plasma spectrometer, measure respectively line strength of copper, manganese, three kinds of elements of tin, according to the line strength recording, from three standard working curves of step (2) gained, check in respectively the content of copper, manganese, tin element, then calculate the ratio of copper, manganese, tin in copper manganese ashbury metal powder sample, result is calculated A=(B-C) * V/M, in formula:
The content of respective element in A-sample, the ppm of unit,
The concentration of respective element in B-sample, the μ g/mL of unit,
The background concentration of matrix to respective element in C-sample, the μ g/mL of unit,
V-sample solution cumulative volume, Unit/mL,
M-sample mass, the g of unit.
2. a kind of method of measuring copper, manganese, tin element content in copper manganese ashbury metal powder with ICP according to claim 1, is characterized in that: in described step (3), concentrated hydrochloric acid is formed according to volume ratio 1 ﹕ 3 dilutions by pure hydrochloric acid and deionized water.
3. a kind of method of measuring copper, manganese, tin element content in copper manganese ashbury metal powder with ICP according to claim 1, is characterized in that: in described step (3), nitric acid is formed according to volume ratio 1 ﹕ 3 dilutions by pure nitric acid and deionized water.
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| CN104181150A (en) * | 2014-09-16 | 2014-12-03 | 中蓝连海设计研究院 | Method for measuring manganese content in rock phosphate by inductively coupled plasma (ICP) |
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| CN104730098A (en) * | 2015-04-03 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A rapid analysis method for high content harmful elements in blast furnace iron charge |
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| CN109211881A (en) * | 2018-11-08 | 2019-01-15 | 北京星航机电装备有限公司 | A method of copper coin cellulose content in copper is seeped with ICP-OES measurement tungsten |
| CN112485242A (en) * | 2020-11-17 | 2021-03-12 | 云南锡业矿冶检测中心有限公司 | Analysis and detection method for tin content in alloy waste |
| CN112964698A (en) * | 2021-02-22 | 2021-06-15 | 青岛斯坦德检测股份有限公司 | Method for measuring high-content tin in copper alloy by ICP-OES |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104406957A (en) * | 2014-12-01 | 2015-03-11 | 核工业理化工程研究院 | Simultaneous Determination of Multi-Element Content in Aluminum Bronze by ICP Method |
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